Gd2OSe2

Olivier Tougait; James A Ibers

doi:10.1107/S0108768100003025

Gd₂OSe₂

Olivier Tougait, James A Ibers

Chemistry

Research output: Contribution to journal › Article › peer-review

16 Scopus citations

Abstract

Single crystals of digadolinium monooxygen diselenide, Gd₂OSe₂, have been obtained from a KBr flux. The compound is isostructural with the low-pressure form of Dy₂OS₂. All atoms lie on the mirror plane of Pnma. The Gd environments are a GdO₃Se₅ bicapped trigonal prism and a GdOSe₅ distorted octahedron. The two coordination polyhedra pack by face-sharing and edge-sharing to form a [Gd_8/4O_4/4Se_8/8^a-Se_8/8ⁱ] fragment, which is the main motif of the structure. These fragments lie in the ac plane and form infinite chains parallel to c through the sharing of Se atoms around atom Gd1. In the a direction, these chains stack through the sharing of an Se atom around atom Gd2, thereby delimiting large pentagonal cavities.

Original language	English (US)
Pages (from-to)	623-624
Number of pages	2
Journal	Acta Crystallographica, Section C: Crystal Structure Communications
Volume	56
Issue number	6
DOIs	https://doi.org/10.1107/S0108768100003025
State	Published - Jun 1 2000

ASJC Scopus subject areas

Medicine(all)
Biochemistry, Genetics and Molecular Biology(all)

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10.1107/S0108768100003025

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title = "Gd2OSe2",

abstract = "Single crystals of digadolinium monooxygen diselenide, Gd2OSe2, have been obtained from a KBr flux. The compound is isostructural with the low-pressure form of Dy2OS2. All atoms lie on the mirror plane of Pnma. The Gd environments are a GdO3Se5 bicapped trigonal prism and a GdOSe5 distorted octahedron. The two coordination polyhedra pack by face-sharing and edge-sharing to form a [Gd8/4O4/4Se8/8a-Se8/8i] fragment, which is the main motif of the structure. These fragments lie in the ac plane and form infinite chains parallel to c through the sharing of Se atoms around atom Gd1. In the a direction, these chains stack through the sharing of an Se atom around atom Gd2, thereby delimiting large pentagonal cavities.",

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AU - Ibers, James A

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N2 - Single crystals of digadolinium monooxygen diselenide, Gd2OSe2, have been obtained from a KBr flux. The compound is isostructural with the low-pressure form of Dy2OS2. All atoms lie on the mirror plane of Pnma. The Gd environments are a GdO3Se5 bicapped trigonal prism and a GdOSe5 distorted octahedron. The two coordination polyhedra pack by face-sharing and edge-sharing to form a [Gd8/4O4/4Se8/8a-Se8/8i] fragment, which is the main motif of the structure. These fragments lie in the ac plane and form infinite chains parallel to c through the sharing of Se atoms around atom Gd1. In the a direction, these chains stack through the sharing of an Se atom around atom Gd2, thereby delimiting large pentagonal cavities.

AB - Single crystals of digadolinium monooxygen diselenide, Gd2OSe2, have been obtained from a KBr flux. The compound is isostructural with the low-pressure form of Dy2OS2. All atoms lie on the mirror plane of Pnma. The Gd environments are a GdO3Se5 bicapped trigonal prism and a GdOSe5 distorted octahedron. The two coordination polyhedra pack by face-sharing and edge-sharing to form a [Gd8/4O4/4Se8/8a-Se8/8i] fragment, which is the main motif of the structure. These fragments lie in the ac plane and form infinite chains parallel to c through the sharing of Se atoms around atom Gd1. In the a direction, these chains stack through the sharing of an Se atom around atom Gd2, thereby delimiting large pentagonal cavities.

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Gd₂OSe₂

Abstract

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